Plexiform arteriopathy may result in non-specific ground glass changes which can be incorrectly attributed to infection, inflammation or edema on CT chest. It is a finding more common in cases of idiopathic pulmonary hypertension, however other causes of pulmonary hypertension e.g. congenital shunt, can also show this finding. Features that confirm the ground glass opacities as plexiform arteriopathy include:

• close association with dilated, tortuous peripheral vessels
• abnormal systemic collaterals
• features of pulmonary hypertension on CT
  • dilated pulmonary trunk
  • peripheral pruning and tortuosity of pulmonary arteries
  • right ventricular dilation and/or hypertrophy
  • interventricular septal flattening/bowing
  • right atrial dilatation